public override OperationReturn <string> ValidateParameters()
{
OperationReturn <string> response = new OperationReturn <string>();
// Checks if csv file exists
string csvFile = Parameters[0];
if (File.Exists(csvFile) == false)
{
response.MessageList.Add(new OperationInfo("02", $"Csv file doesn't exist at {csvFile}"));
response.Success = false;
return(response);
}
_productOrderItems = GetProductOrderItemsFromParameters();
// Checks if product identifier exists
if (_productOrderItems.Any(x => _productItemRepository.GetProductItemById(x.ProductId) == null))
{
response.MessageList.Add(new OperationInfo("03", "All products in the order must be present in the csv source file."));
}
// Checks if the "quantity" parameter is valid
if (_productOrderItems.Any(x => x.Quantity == 0 || x.Quantity < 0))
{
response.MessageList.Add(new OperationInfo("04", "All products in the order must have a valid quantity."));
}
response.Success = (response.MessageList.Count == 0);
return(response);
}